Anonymous Class

As the name implies, an anonymous inner class isn’t defined using an explicit name.

An anonymous inner class is created when you combine instance creation with inheriting a class or implementing an interface. Anonymous classes come in handy when you wish to override methods for only a particular instance. They save you from defining new classes.

The anonymous class might override none, few, or all methods of the inherited class. It must implement all methods of an implemented interface. The newly created object can be assigned to any type of variable—static variable, instance variable, local variable, method parameter, or returned from a method. Let’s start with an example of an anonymous inner class that extends a class.